Complete backspacing searching method for tracing reasons of power failure after appearance of power distribution network fault
A distribution network fault and search method technology, applied in data processing applications, electrical digital data processing, special data processing applications, etc., can solve problems such as unsuitable path search, high algorithm complexity, and efficiency bottlenecks, and achieve a solution path Effects of searching for problems, eliminating islands, and correcting topology errors
Active Publication Date: 2013-04-03
STATE GRID CORP OF CHINA +2
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Problems solved by technology
The former has no specific direction, and all nodes must be traversed. The algorithm complexity is high, and there is an efficiency bottleneck when applied to real-time search of large-scale distribution networks. Generally, it is not suitable for searches that need to record path distances.
[0003] The existing breadth-first search algorithm is generally applicable to the whole network topology analysis, which systematically expands and checks all nodes in the graph, and is not suitable for path search
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[0045] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0046] The technical term that the present invention occurs is explained below:
[0047] Distribution transformer: that is, a distribution transformer, which is installed on a pole or in a power distribution station, and reduces the voltage from 10kV to about 400V to input users. In the present invention, the words "distribution transformer" and "user" can be used interchangeably.
[0048] Feeder section: The part of the feeder in the distribution network where the magnitude and direction of the current do not change. In other words, any node in the feeder where the magnitude or direction of the current changes is the dividing point of the two feeder segments. A feeder segment is one of the smallest units in a distribution network.
[0049] Distance: The length of the circuit (km) from the assigned transformer to the ...
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The invention relates to a backspacing method in the field of the electrical power system, particularly to a complete backspacing searching method for tracing reasons of power failure after the appearance of power distribution network fault. The method includes the following steps: A, performing recursion search from a node corresponding to a power-losing distribution transformer; B, judging whether a power source is searched; C, confirming a route from the power-losing distribution transformer to the power source, the distance of the route and the information of an switched off switch on the route and nearest to the starting node; and D, obtaining the reason of power failure of the power distribution network. The method is efficient for radial power distribution networks, can be used for efficiently and accurately positioning the reason of power failure, is of vital importance in guiding distribution network dispatching personnel to quickly command power restoration, can be used for clearly positioning topological error and effectively guide planners to eliminate islands and revise the topological error in the aspect of planning, has been applied to the on-line site reliability monitoring platform, and is embodying the practical engineering value.
Description
technical field [0001] The invention relates to a fallback method in the field of power systems, in particular to a full fallback search method for tracing the cause of a power outage after a distribution network fault. Background technique [0002] The existing depth-first search is a French greedy search, and the forward search is followed by gradual regression, which is different from the complete regression search method involved in this patent application. The former has no specific direction and must traverse all nodes. The algorithm complexity is high, and there is an efficiency bottleneck when it is applied to the real-time search of large distribution networks. It is generally not suitable for the search that needs to record the path distance. [0003] The existing breadth-first search algorithm is generally applicable to the whole network topology analysis, which systematically expands and checks all nodes in the graph, and is not suitable for path search. [0004...
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Login to View More IPC IPC(8): G06F17/30G06Q50/06
CPCY02D10/00
Inventor 马康刘军刘海涛
Owner STATE GRID CORP OF CHINA